不同处理对“北玫”葡萄新梢耐低温胁迫的影响
发布时间：2018-07-14 09:32
【摘要】：为了缓解晚霜冻对酿酒葡萄植株产生的危害,本试验以酿酒葡萄“北玫”为试材,研究春季萌芽后不同的加热处理对“北玫”葡萄新梢温度的影响;不同浓度的S-诱抗素(100mg/L、150mg/L、200mg/L),水杨酸(10mmol/L、20mmol/L、30mmol/L),寡糖(50mg/L、100mg/L、150mg/L、200mg/L)处理,对低温胁迫下葡萄新梢中可溶性物质含量、膜透性及活性氧代谢相关酶活性的影响。结果表明:1.燃蜡处理和电热丝加热处理均能提高葡萄新梢的温度,其中0.045kg · h/m2的燃蜡处理能提高新梢温度1.8～2.9℃,与CK间达到极显著差异;与第一道横丝距离2 cm的30W·h/m2处理的电热丝能提高新梢温度1.1～1.6℃,与CK间达到显著差异。2.喷施适合浓度的外源生长调节剂,能在一定程度上降低低温胁迫下“北玫”葡萄新梢的细胞膜透性和MDA含量,增加渗透调节物质含量和提高抗氧化保护酶的活性,降低低温胁迫所带来的伤害,从而提高“北玫”葡萄新梢的抗冻性。其中,150mg/L的S-诱抗素显著提高了 SOD、CAT和POD酶活性,并且使相对电导率和MDA含量显著降低。20mmol/L的水杨酸显著提高了葡萄新梢中可溶性糖和Pro的含量,极显著的提高了细胞中SOD、CAT和POD酶活性,使新梢的相对电导率和MDA含量极显著的降低。100mg/L的寡糖显著提高了葡萄新梢中Pro的含量和CAT、POD酶活性,极显著的提高了细胞中可溶性糖含量和SOD酶活性,使新梢的MDA含量极显著的降低。200mg/L的寡糖处理与CK间无显著差异。因而,在0～-3℃下,对“北玫”葡萄进行合理的加热处理和喷施适宜浓度的生长调节剂处理,可提高葡萄新梢的抗冻性,有效缓解了晚霜冻对酿酒葡萄植株产生的危害。
[Abstract]:In order to alleviate the harm of late frost on the grape plant, the effect of different heating treatment after spring germination on the temperature of the new shoot of "Bei Mei" grape was studied. The effects of different concentrations of S- inductor (100 mg / L, 150 mg / L, 200 mg / L), salicylic acid (10 mmol / L, 20 mmol / L, 30 mmol / L) and oligosaccharide (50 mg / L, 100 mg / L, 150 mg / L, 200 mg / L) on the content of soluble substances, membrane permeability and the activity of enzymes related to active oxygen metabolism in grape shoots under low temperature stress. The result shows that 1: 1. The temperature of grape shoots was increased by both wax burning treatment and heating treatment, and the temperature of new grape shoots was increased by 0.045kg h/m2 (1.82.9 鈩，
本文编号：2121227
[Abstract]:In order to alleviate the harm of late frost on the grape plant, the effect of different heating treatment after spring germination on the temperature of the new shoot of "Bei Mei" grape was studied. The effects of different concentrations of S- inductor (100 mg / L, 150 mg / L, 200 mg / L), salicylic acid (10 mmol / L, 20 mmol / L, 30 mmol / L) and oligosaccharide (50 mg / L, 100 mg / L, 150 mg / L, 200 mg / L) on the content of soluble substances, membrane permeability and the activity of enzymes related to active oxygen metabolism in grape shoots under low temperature stress. The result shows that 1: 1. The temperature of grape shoots was increased by both wax burning treatment and heating treatment, and the temperature of new grape shoots was increased by 0.045kg h/m2 (1.82.9 鈩，
本文编号：2121227
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